--- Why does the lake smell terrible?--- Because large quantities of water _________.
#101273
A
have polluted
B
is being polluted
C
has been polluted
D
have been polluted
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He__________ he would be able to leave tomorrow, but it's beginning to take difficult.
#104305
A
hopes
B
was hoping
C
had hoped
D
hoped
-Have you got your test result? -Not yet. The papers _____.
#104685
A
are still being corrected
B
are not correcting
C
have already been corrected
D
have not corrected
Stay awake！You should know that it ________to sleep in class.
#102691
A
doesn’t permit
B
is not permitted
C
will not be permitted
D
was not permitted